When precision meets AirGreen expertise
At AirGreen , we know that every HVAC repair must combine rigorous diagnostics , technical expertise , and attention to detail . This is exactly what our team demonstrated during a service call in Lachine , where a Sharp wall-mounted air conditioner was exhibiting inconsistent performance in cooling mode.
Context of the intervention
Our client, the owner of a recently renovated single-family home, contacted us after noticing that his wall-mounted Sharp unit was no longer producing as much cold air as usual. Despite regular maintenance, the main room remained lukewarm even when the thermostat was set to 22°C.
Upon our arrival, our technician performed a complete inspection of the indoor unit and outdoor compressor. To confirm performance, we used a professional infrared thermometer —an essential tool for measuring the exact temperature of the blown air. The laser's display showed 16.4°C , a sign that the system was producing cooling, but not at the optimal level for this model.
Accurate diagnosis: a sensor and maintenance involved
After careful disassembly of the front cover, our technician observed a slight clogging of the filter and an accumulation of dust on the evaporator fins . These residues hinder air circulation and reduce the efficiency of the system.
However, the main cause of the insufficient performance came from the room temperature sensor , which was slightly out of adjustment. This component, essential for the proper functioning of the electronic card, distorted the reading of the actual room temperature, causing the compressor to stop prematurely.
So we have:
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Cleaned and disinfected the air filters and evaporator with a specialized biodegradable product.
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Reset the sensor and recalibrated the electronic board.
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Checked R-32 refrigerant pressure , meets Sharp manufacturer specifications.
Performance testing and validation
Once the system was back in service, we repeated the measurements using the infrared thermometer. The result: the air blown out reached 9.8°C , confirming optimal performance. The customer immediately noticed the difference: the ambient temperature dropped rapidly, restoring the expected comfort in the main room.
What sets AirGreen apart in Lachine
Our team doesn't just repair: we analyze, explain, and optimize . Each service includes:
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A complete check of the refrigeration cycle.
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Inspection of electrical connections and control boards.
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Deep cleaning to extend the life of the system.
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Personalized advice to maintain maximum energy efficiency.
At AirGreen, we combine rigorous diagnostics with a human approach. In Lachine, as elsewhere in Greater Montreal, our mission is clear: to restore comfort and peace of mind to our customers, regardless of the make or model of their HVAC system.
Recommendations for Sharp Air Conditioner Owners
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Maintain your filters every 4 to 6 weeks during the summer.
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Have the temperature sensor and electronic boards inspected every two years.
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Schedule a complete annual maintenance with an AirGreen certified technician.
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Monitor the blowing temperature : a difference of at least 10°C with the ambient temperature indicates good performance.
Reliable, local and professional service
Thanks to our teams deployed throughout the North Shore, South Shore, Laval and Montreal , we guarantee rapid interventions adapted to each situation. Whether for a Sharp air conditioner , a Fujitsu system , a Gree multi-zone or a Midea heat pump , our know-how is based on years of field experience and continuous training.
The case of this Sharp wall-mounted air conditioner in Lachine is a good illustration of our approach: technical precision supported by exemplary customer service . Within hours, the system was back to full performance, and the customer, back to comfort.